徐州市土地利用变化的遥感监测

以1987、1994、2003年的卫星遥感图像TM为主要数据源,利用神经网络分类法提取出土地利用类型信息,计算出徐州市各土地利用类型数量、比例以及土地利用类型变化的变化率指数,在此基础上构建起土地利用变化的空间分布图,据此分析了徐州市16年来土地利用时空变化特征.结果表明:建设用地和水体的面积急剧增长致使耕地的面积大幅度减少,煤炭资源的开采是引起耕地塌陷积水以及村庄搬迁的重要原因.

Change of Land Use in Xuzhou City Based on Remote Sensing

Based on satellite remote sensing TM images in 1987,1994 and 2003,the land use information in Xuzhou City is extracted with the method of neural network classification.The area,ratio and change rate indexes of land use are calculated.The spatial distribution maps of land use change are constructed using compare method after classification results.On the basis of the work,the characters of land use spatio-temporal changes in Xuzhou City from 1987 to 2003 are revealed.The conclusions may be distinguished as follows: The urban construction land and water bodies rapidly increase by occupying great amounts of farmland.The reason of subsidence of farmland and village removal is coal mining,however.